Development of double-scattering-type Compton camera with double-sided silicon strip detectors and NaI(Tl) scintillation detector

Seo, Hee; Kim, Chan Hyeong; Park, Jin Hyung; Kim, Jong Kyung; Lee, Ju Hahn; Lee, Chun Sik; Lee, Jae Sung

doi:10.1016/j.nima.2010.02.060

Cited by 25 publications

(10 citation statements)

References 23 publications

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“…Since the Compton camera (CC) was first proposed for medical imaging (Todd et al , 1974), many researchers have studied its use for a wide range of medical applications, including 2D and 3D imaging of prompt gamma (PG) emission from a patient during proton radiotherapy as a means of providing in vivo verification of the delivered proton beam range (Frandes et al , 2010; Gillam et al , 2011; Golnik et al , 2016; Hueso-Gonzalez et al , 2016; Kim et al , 2013; Kormoll et al , 2011; Krimmer et al , 2015; Llosa et al , 2012; Lojacono et al , 2013; McCleskey et al , 2015; Munoz et al , 2017; Peterson et al , 2010; Polf et al , 2015; Richard et al , 2011; Robertson et al , 2011; Roellinghoff et al , 2014; Rohling et al , 2017; Seo et al , 2010; Solevi et al , 2016; Thirolf et al , 2016; Thirolf et al , 2014). In standard Compton imaging, information pertaining to the energy deposited by and spatial coordinates of gammas that interact at least twice in the stages of a CC is used to create the images.…”

Section: Introductionmentioning

confidence: 99%

3D prompt gamma imaging for proton beam range verification

Draeger¹,

Mackin²,

Peterson³

et al. 2018

Phys. Med. Biol.

127

100

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We tested the ability of a single Compton camera (CC) to produce 3-dimensional (3D) images of prompt gammas (PGs) emitted during the irradiation of a tissue-equivalent plastic phantom with proton pencil beams for clinical doses delivered at clinical dose rates. PG measurements were made with a small prototype CC placed at three different locations along the proton beam path. We evaluated the ability of the CC to produce images at each location for two clinical scenarios: (1) the delivery of a single 2 Gy pencil beam from a hypo-fractionated treatment (~9 × 10 protons), and (2) a single pencil beam from a standard treatment (~1 × 10 protons). Additionally, the data measured at each location were combined to simulate measurements with a larger scale, clinical CC and its ability to image shifts in the Bragg peak (BP) range for both clinical scenarios. With our prototype CC, the location of the distal end of the BP could be seen with the CC placed up to 4 cm proximal or distal to the BP distal falloff. Using the data from the simulated full scale clinical CC, 3D images of the PG emission were produced with the delivery of as few as 1 × 10 protons, and shifts in the proton beam range as small as 2 mm could be detected for delivery of a 2 Gy spot. From these results we conclude that 3D PG imaging for proton range verification under clinical beam delivery conditions is possible with a single CC.

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Section: Introductionmentioning

confidence: 99%

3D prompt gamma imaging for proton beam range verification

Draeger¹,

Mackin²,

Peterson³

et al. 2018

Phys. Med. Biol.

127

100

View full text Add to dashboard Cite

show abstract

“…Our research group has developed, as a simple solution to this problem, a prototype double-scattering Compton camera consisting of two double-sided silicon strip detectors (DSSDs) as scatter detectors and a cylindrical NaI(Tl) scintillation detector as the absorber detector. This type Compton camera is suitable for either nuclear decommissioning applications or particle therapy applications, both of which involve imaging of high-energy gamma-ray sources [4,5]. The basic idea of the double-scattering Compton camera is the maximization of imaging resolution by very accurate measurement of two successive Compton-scattering interaction positions using two thin, high-spatial-resolution scatter detectors followed by measurement of the remaining energy of the double-scattered gamma-ray using an absorber detector.…”

Section: Contentsmentioning

confidence: 99%

Section: Double-scattering Compton Cameramentioning

confidence: 99%

Monte Carlo simulations on performance of double-scattering Compton camera

et al. 2012

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A double-scattering Compton camera that can effectively obtain three-dimensional emission images in high-energy gamma-ray applications such as nuclear decommissioning and particle therapy monitoring has been developed. The double-scattering Compton camera utilizes two position-sensitive detectors as scatter detectors to determine the trajectory of a scattered gammaray, and a scintillation detector as absorber detector to measure the remaining energy of the doublescattered gamma-ray. The benefit of using two scatter detectors is the accurate determination of the gamma-ray trajectory after the scattering at the first scatter detector, which makes possible higher imaging resolution. In the present study, Geant4 Monte Carlo simulations were conducted to compare the performance of the double-scattering Compton camera with that of a similarly dimensioned single-scattering Compton camera for different source energies. Further, the optimal geometry of the multiple-detector-type double-scattering Compton camera was investigated for the purposes of increasing its imaging sensitivity. The results showed that the double-scattering Compton camera offers superior angular resolution over the entire energy range considered in the present study, whereas the single-scattering Compton camera provides greater sensitivity. The results also showed that, in general, the placement of additional detectors in the axial direction (i.e., stacking) is more effective for sensitivity improvement than doing so in the planar direction. This axial placement, however, lowers the imaging resolution. The double-scattering Compton camera exhibited the highest sensitivity when the additional scatter detectors were added to the first scatter detector

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“…The Compton camera considered in the present study, a double-scattering type and recently developed as a prototype system, consists of three gamma-ray detectors: two double-sided silicon strip detectors (DSSDs) as scatterer detectors and one NaI(Tl) scintillation detector as an absorber detector [6,7]. Provided that the deposited energies in the component detectors and the tracks of the scattered photons can be accurately determined, the gamma-ray source can be three-dimensionally localized from three or more conical surfaces.…”

Section: Simulation Geometriesmentioning

confidence: 99%

Feasibility study on Compton imaging for visualization of flow patterns using radiotracers

Seo¹,

Park²,

Park³

et al. 2011

J. Inst.

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The radiotracer technique could be used in studies on multiphase flow systems by three-dimensional visualization of flow patterns, and, relatedly, there have been attempts to develop an industrial-purpose single photon emission computed tomography (SPECT) system. Compton cameras also have a great potential for industrial applications, due specifically to their inherent three-dimensional imaging capability, multi-tracing capability, and higher imaging sensitivity than imaging devices based on mechanical collimation. In the present study, the feasibility of Compton imaging for visualization of detailed flow patterns was determined using a Geant4 Monte Carlo simulation toolkit. The Compton camera considered is a double-scattering type consisting of three gamma-ray detectors: two double-sided silicon strip detectors (DSSDs) as scatterer detectors and one NaI(Tl) scintillation detector as an absorber detector. The results showed that the three-dimensional source distributions can be determined with the Compton camera under various source conditions, including a point source at the center, and two cylinderial volume sources of different dimensions or energies.

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Development of double-scattering-type Compton camera with double-sided silicon strip detectors and NaI(Tl) scintillation detector

Cited by 25 publications

References 23 publications

3D prompt gamma imaging for proton beam range verification

3D prompt gamma imaging for proton beam range verification

Monte Carlo simulations on performance of double-scattering Compton camera

Feasibility study on Compton imaging for visualization of flow patterns using radiotracers

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